Machine for screw-threading wire



(No Model.) 2 Sheets-Sheet 1.

L. GODDU.

MACHINE FOR SGREW THREADING WIRE.

No. 385,801. Patented July 10, 1888.

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(No Model.) 2 Sheets-Sheet 2. L. GO-DDU.

MACHINE FOR SGREW THRBADING WIRE. No. 385,801. Patented July 10, 1888.

N. PiTERS, Phokvulbognphlh Washington. D. C.

UNITED STATES PATENT QFFICEO LOUIS GODDU, OF XVINCHESTER, ASSIGNOR TO JAMES V. BROOKS, TRUSTEE, OF CAMBRIDGE, AND FRANK F. STANLEY, ASSOCIATE TRUSTEE, OF

SlVAMPSOOTT, MASSACHUSETTS.

MACHINE FOR SCREW- THREADING WlRE,

SPECIFICATION forming part. of Letters Patent No. 385,801, dated July 10, 1888.

Application filed November 29. ISFT.

To aZZ whom it may concern;

Be it known that I, LOUIS GODDU, of \Vinchester, county of Middlesex, State of Massachusetts, have invented an Improvement in Machines for Screw-Threading \Vire, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

This invention has for its object the production of a machine by which to manufacture the double-threaded sole-fastening wire described in United States Patent No. 370,136, granted to me on the th day of September, 1887.

The machine herein described contains a rotating head provided with two diagonallyplaced chasing tools or cutters, which engage the wire at opposite sides and also at exactlyopposite points to thereby out two independ- 20 cut threads. The base ot'oue isjust opposite the other, the said cutters engaging the wire close to a guide through which the wire is fed by feeding-rollers, the threaded wire being taken away from the cutters and guide between 2 a pair of clamping-rolls serrated to receive the threads of the wire on its way to be wound upon a spool, from which it is taken in coil form for use in a nailing machine.

My invention consists in the feed-rolls, the wire-guide, and the clamping-rolls grooved to fit the thread cut into the wire, combined with the tube B, the rotating sleeve having a head, and the two attached diagonally-set cutters arranged to act upon the opposite sides of the 5 wire at diametrically opposite points, to thereby cut two threads, each exactly in line with the other diametrically, as will be described.

Figure l is a top or plan view of a machine 0 embodying my invention for threading wire;

Fig. 2, a "front elevation thereof; Fig. 3, a partial longitudinal section, on a larger scale, in a line intersecting thelongitudinal center of the spindle; and Fig. 4., a front end view of the rotating head and cutting-tool detached, the

nose-pieces a being removed to show the cutters.

The frame-work A, of suitable shape to contain the working parts, has an upright portion,

Serial No. 256,407. (No model.)

in which is secured the tube B, having at one end a head, I), which is split, as at I), the said head having suitable studs to constitute bearings for the two clamping-rolls b I), each scored or cut away annularly to form grooves, as best shown in Fig. l, for the passage between the I adjusting screws, 7), which cross the slots I) and screw into one part of the divided head, each 01' said screws near its head passing through a spiral spring, (see Fig. 3,) which enables the two rolls If I) to he maintained by a yielding pressure against the wire. (Not shown.)

The stationary tube B receives upon it the sleeve 0, provided, as herein shown. with a belt pulley or whirl, O, the front end of the sleeve having a head, O provided with lips 0, (see Fig. 4,) between which and suitable caps, 0', under the control of screws c",are held the two cutters 2 3, the said cutters having V- shaped edges and meeting the Wire, as will be understood from Fig. 4, at opposite sides thereof, so that one cutter serves the purpose of a support for the wire, while the other cutter enters it, the two cutters being presented to the wire diagonally, as shown in Fig. 1, and with the point of one cutter exactly opposite the point of the other cutter diametrically, but one above the other, as best shown in Fig. 4, so that the wire is provided with two independent threads, the bottoms of which, at opposite sides the wire, are in line each with the other, the said cutters engaging the wire close to and just as it emerges from the rear or righthand side of the guide (I, attached to the nose piece a of the head C by a screw, (1, so that the guide may be quickly renewed, if worn. and to permit a guide of any desired internal diameter to be used, that depending upon the size of the wire to be threaded, the guide supporting and guiding the wire up to the cutters. The nose-piece a is attached to the head by two screws, (shown by dotted lines in Fig. 1.) the said screws entering holesn in the head. (See Fig. 4.)

The screws act as adjusting-screws for the cutters, whereby the depth of the thread may be varied.

The sleeve 0, rotated by a belt or in other usual manner, has a pinion, e, which, through gears 6" 6*, drives the toothed gear e*, which is fast on and rotates the shaft G, as in United States Patent No. 167,760, granted to me September 14, 1875, to which reference may be had, the said shaft, as in the said patent, havingupon it two worms, only one of which, as F, is herein shown, it engaging the wormtoothed pinion E fast on the lower end of the feed shaft 6.

In practice, as in the patent referred to, the

rear end of the shaft G has aworm (not herein shown) which engages a gear-wheel, S which is frietionally connected with a friction-disk, R, provided with pins 8, which pass through the inner disk of a spool, O, mounted on a spool-shaft, P, which is slid longitudinally, taking with it the spool O, by a bell-crank 1ever, V, deriving its motion from a cam-hub, U, all substantially as shown in the said patent, the spool being rotated frictionally, so as to take upon its surface the wire as it is threaded, it turning upon the devices which impart rotation to it to accommodate for the varyingdiameterofthe mass of wire, the spoolshalt P being reciprocated, and with it the spool with relation to the guide 6, to enable the wire to be led from one to the other head of the spool in uniform manner.

The spool and the mechanism for rotating it, being old in the said patent, need not be herein further described.

The feed-shaft c has at its upper end the feed-roll e. The shaft 6 has its hearings in the blockf, secured to the frame-work in an adjustable manner by the screwsff, so that the upper end of the block may move somewhat laterally. The shaft 15, carrying the feed-wheel a it being also grooved annularly to fit and to co operate with the roll 6 to feed the wire, has a pinion, as 9, which is engaged by a pinion, 8, of like diameter, on the shaft The shaft 15, carrying the feed-wheel 6 has its bearingsin the block 9, secured to the frame-work in an adjustable manner by the screws g 9 The holes in the upper ends of the blocks f and g, to receive the screwsf are of greater-diameter than the said screws, so that the blocksfand g may turn somewhat on thescrewsf and g. The blockf has connected with it a screw, g which is passed loosely through a hole in the block 9, and a spring, on the said screw, between its head and the block 9, causes the said blocks to be held one toward the other in a yielding manner, the said spring serving to keep the feedrolls a c pressed in a yielding manner against the wire passing between them, the said rolls, rotated in unison, acting to force the wire through the guide (1, pushing the wire up to and past the cutters, the wire beyond the clamping-guide rolls being led through the tube B, and thereafter it is wound upon the spool 0, already described.

The inner edges of the boxesf and g are provided with semicircular grooves to fitthe outer side of the shafts e and 15 of the feedrolls, and preferably the diameters of the said shaftsjust above the pinions 8 and?) are of such size as to meet when the gears are in mesh, one roll thus steadying the other and running one on the other, the wear being less than if the said shafts ran in boxes entirely surrounding them, as in the said patent.

The rear end of the tube B, beyond the oilboX D, has connected to it the delivery-guide e, slotted for the passage of the wire to the spool O.

I claim- The feed-rolls, the wire-guide, and the clampingrolls grooved to 'fit the thread cut into the wire, combined with theguide B, the rotating sleeve having a head and the two attached diagonally-set cutters arranged at opposite sides of the wire and diametrically opposite each other, to operate substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesscs.

LOUIS GODDU.

Witnesses:

G. WV. GREGORY, B. DEWAR. 

